Dedicated handhelds aren't like tablets, don't expect to see one every year. The psp and ds went through hardware revisions about every 2 to 3 years.
Sony has 10 year Gaurentee/dedications to their systems ....PS1,PS2,still PSP & PS3 & now the Vita...you have to think logically. Everything takes time, software upgrades , bugs/fixes things like that . Why are everyone about graphix & no patience at all. just relax about it or don't buy their products.