The Pokémon Company announced today that a special announcement would be revealed on Monday, September 16th, 2013 at 8am PDT. The notice was posted on their official Twitter and Facebook accounts. There is no indication as to what the announcement is about.

Official Tweet of Announcement

Heads up, Trainers! We've got a surprise for you! Tune in Monday at 8 a.m. PDT for a special announcement!

Sources: https://twitter.com/Pokemon/status/378911540792942592 and https://www.facebook.com/photo.php?fbid=404501403005143&set=a.242079005914051.53034.230809307041021&type=1

Gottacatchemall.com

The Pokémon Company announced that they were bringing back the catch phrase "Gotta Catch 'Em All"! To celebrate, they created code hunt and gave people in the United States the chance to win cool Pokémon stuff! The video accidentally leaked a week ago, so it was speculated that the big announcement would be related. The video was created by Pogo who made a version of the classic theme song.

Official Contest Rules

No purchase necessary. A purchase of any kind will not increase your chances of winning. Many will enter; few will win. Void where prohibited. Open to residents of the United States and the District of Columbia and the U.S. territories of American Samoa, Guam, Marianas, Puerto Rico, and the U.S. Virgin Islands.

Weekly Entry Period	Start Date and Time	End Date 11:59 p.m. ET	Approximate Drawing Date
1	September 16, 2013 at 11:00 a.m. ET	September 22, 2013	September 23, 2013
2	September 23, 2013 at 12:00 a.m. ET	September 29, 2013	September 30, 2013
3	September 30, 2013 at 12:00 a.m. ET	October 6, 2013	October 7, 2013
4	October 7, 2013 at 12:00 a.m. ET	October 12, 2013	October 14, 2013

About the Contest

During the Promotion Period, visitors could go to www.GottaCatchEmAll.com and enter a passcode. There are 24 Pokémon passcodes to enter and for each one the participant would automatically receive one entry into the applicable Weekly Entry Period drawing. A hint was given to allow people to find where the code was located on the Internet.

Below is a list of prizes that were given out during each of the four promotional periods.

Prize	Quantity Per Weekly Entry Period	Approximate Retail Value (“ARV”)
Nintendo 3DS Handheld Video Game System	1	$200
Pokemon Trading Card + Figure Box (3 Designs)	9	$15
Black 2 White 2 Official National Pokédex & Guide	20	$20
Pokémon Plush Toys (4 different characters)	16	$10
Pokémon X Nintendo 3DS Game Download Code	4	$40
Pokémon Y Nintendo 3DS Game Download Code	4	$40

Passcodes

Code	Pokémon	Prize	Hint
XY1012	Site Entry Code	Access the website	None
XY738A	Free Entry	1 free entry per week	Was listed in Rules PDF
X9K3	Malamar	Phone Sound (Wobbuffet, Eevee, Psyduck)	Keeping you informed on all the latest Pokémon news!
X3K5	Chespin	Pokémon Theme - Phone Ringtone
Y8P4	Pancham	Black and Whiet - Phone Ringtone	I want my geek TV.
X4Q8	Dedenne	Phone Sound (Chimchar, Piplup, Turtwig)	Put your finger on the gaming pulse.
Y2P6	Noivern	Pokémon Adventures Wallpaper
X7Q5	Honedge	Phone Ringtone	Stop here for Pokémon games and gear!
X7C9	Helioptile	Mega Absol Wallpaper
X5H8	Fennekin	Phone Sound (Oshawott, Snivy, Tepig)
Y4L6	Skrelp
Y5B6	Spritzee	Rival Destinies - Phone Ringtone
Y9D8	Gogoat	It's Always You and Me - Phone Ringtone	We’re picking up something on our radar.
Y8H7	Yveltal	Phone Sound (Bulbasaur, Charmander, Squirtle)
X8G5	Inkay	Pokémon Black and White Volume 2 Manga	If you're as obsessed as us, you've probably got a complex.
X2R4	Bunnelby	Mega Mawile Wallpaper
Y6J5	Sylveon	Pokémon Black and White Volume 3 Manga
Y3S7	Skiddo	Phone Sound (Mudkip, Torchic, Treecko)
X6P4	Froakie	TCG Online Booster Pack Code
Y3F2	Pangoro	Phone Sound (Charizard, Jigglypuff, Meowth)	You can always get the latest Buzz here.
X5W8	Fletchling	Pokémon Black and White Volume 5 Manga
X5T3	Swirlix	Pokémon Black and White Volume 1 Manga	Pokémon fashion!
X8T9	Litleo	Mega Lucario Wallpaper
Y6V8	Talonflame	Mega Ampharos Wallpaper	It's like what you see before movies, but for games.
X4C7	Clauncher	Alarm Sounds (Chikorita, Cyndaquil, Totdile)	The Green Robot is your gaming guide.
X8T9	Litleo	Mega Lucario Wallpaper
X7M4	Xerneas	Mega Blaziken Wallpaper

PDF of the full rules from the Sweepstakes: PDF Link

Source: https://pokemon.promo.eprize.com/hunt/