Anyone knows when the new pentax optio S4i/S40 is coming out?

Hi all,

been wanting to get the pentax optio s4 recently, but chanced upon a site that said a new version of it is coming out..the s4i. Wondering how long that will be till it gets to singapore because i am looking for a camera real soon. It does seem improved and much better but not sure about photo quality wise..please advise!