There will be two initial "PlayStation Network Collection Packs": The "Puzzle Pack" includes Lemmings, Go! Sudoku and Go! Puzzle. The "Power Pack" includes flOw, Beats and Syphon Filter: Combat Ops.
The Puzzle Pack launches in PAL territories in mid-October this year, while the Power Pack will arrive in late October.
There's no word yet on a North American release.
SCEE plans to release more packs throughout 2009.