After the official announcement of BlackBerry 10 last week at BlackBerry World, Research in Motion, in an effort to let BlackBerry 7 users know RIM cares for them, has launched a promotion for U.S. base BlackBerry 7 years where they can get $77 worth of premium BlackBerry applications for free.

Free BlackBerry 7 applications include:

• Tetris
• Need for Speed, The Run
• The SIMS 3 World Adventures
• Next Dual Pack
• BeWeather
• Pinball Deluxe
• Color ID
• iSpeech Caller ID Pro
• Fixmo Tools
• Popup
• Rubik’s Cube
• Easy Smiley Pack Pro
• Edmondo Sports Traker Pro
• Mahjong Solitaire
• Cribbage
• Screen Muncher
• iSpeech Dictation Pro
• iSpeech FB Chat Pro
• Aces 3D Pool
• PBA Bowling 2

If you are a U.S. based BlackBerry 7 user, head over to BlackBerry App World where you can download each of these premuim BlackBerry 7 apps for free through May 31st.