Because no game is coming with that title
Sly 4 was released 8 years after sly 3. So if you asked this question when sly 3 was released then the answer is 8 years
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)
No so far only sly 3 is. Sly 4 may be
yes they did but they died but slys dad is alive in sly 4 so sly gets to meet him again!
You'll find out in sly 4. Maybe. It's called "Sly 4 thieves in time" so check that out.
i dont think sly 4 is comin out for ps2. it is for ps3. no promises it will even come out.
Murray has to be in Sly 4 he's one of the coolest guys on the team. The game wouldn't be fun without him on the team!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Murray is in sly 4. So you mean ther is going to BE a Sly 4? Cool! I'm a swedish girl, when do it come in sweden?
no sly will not swear
maybe not sly 4 but there will be a sly cooper on psp
they cancelled Sly 4
sly 4 starts a year after the events of sly 3.
no he shoots all the people on sly 4