Sony has confirmed that
PlayStation 2 and
PlayStation 3 games will not be supported by the
PlayStation Vita. A PlayStation Vita
FAQ from Sony stated, “PlayStation does not have plans to make PS Vita compatible with PS3 or PS2 titles at this point.” Supported digital PSP titles and minis will be playable, as will certain PSone classic titles. However, Sony did not provide any additional information regarding the PSone titles and simply said that further details will be released when available.
The comprehensive Q&A post is available
here. The PlayStation Vita goes on sale on February 22nd.