it is supposed to be released spring of 2011
Sony has not announced an official release date for Sly 4.
It is coming out august 18 2011 
no
As of right now there is no release date. Sucker punch may not even be making a Sly 4. Keep checking back to www.suckerpunch.com for info on it though
February 5, 2013
sly 4 is in prudoction as we speek. it is set to come out feburary 20 2009. it will be on ps3 the ps2 release is set same date 2010.
There is still no release date. But if you get all 3 platinum trophies in the Sly Collection, it shows sly cooper on another adventure yet again. Clues will be back, clockwork is rumered to be back again, and all this time travel buisness.Charecters:SlyBentlyMurrayClockworkDimitriRajanJean BisonNeylaContessaCarmalita Montanya Fox
Sly Cooper: Thieves in Time will be released October 1, 2012. Sly 4 is slang for the next Sly game release and not an actual game title used by the developer or publisher. Even the title Thieves in Time is considered only a working title when they are selling the game for preorders
the reason for sly 4 not coming out yet is because sucker punch hasnt started but they gave the series over to another company and they are trying to make it the release date is still uknown but we do know that it will come out in 2012
How long until it is released? It was already released: February 5, 2013 How long between games? Sly Cooper 4 (Thieves in time) was released 8 years after Sly Cooper 3 (Honor Among Thieves) The series so far includes: Sly Cooper and the Thievius Raccoonus (2002) Sly 2: Band of Thieves (2004) Sly 3: Honor Among Thieves (2005) The Sly Collection (a remastered release containing the first 3 games) (2010) Sly Cooper: Thieves in Time (2013) Sly 5 (in development, no public release date)
Yes on the winter of 2010.
Sly Cooper: Thieves in Time will be released at the end of 2012 and the Sly 4 title will not be used PS3 release is October 1, 2012 PS Vita will release later in the year