As seen from this latest Famitsu magazine scan, Armored Core 3: Silent Line and Armored Core: Last Raven are receiving PSP ports soon as well. The listed release dates mark Silent Line due to release November this year, and Last Raven on March 2010. Two Tenchu games are coming out too, with Wrath of Heaven getting the first release this August, and Fatal Shadows on January next year.
Here’s the official launch page for these games. This was previously a countdown page, as what seems to be the norm for teasers these days.
No word on any changes in gameplay for SL or LR, though there is speculation it will take advantage of the PSP’s ability to connect online and play against other players via the internet as seen from AC3P‘s promo video.