According to reports, the PS Vita v1.69.1 update only fixes some stability issues and problems when playing the Escape Plan demo and weighs in at 97MB in size.
To quote: "Earlier today a new firmware update for the PlayStation Vita was made available. Firmware 1.69.1 can now be downloaded via wifi, PC, or PS3 to your Vita. The update is 97MB in size and takes about 2 minutes to download, followed by a minute-long install.
Firmware 1.69.1 fixes some stability issues and problems that Vita owners have encountered when previously playing the Escape Plan demo, so that explains why the file size is so small....
To quote: Hi, Everyone. If you were following all of the coverage from E3 last week, you know that there's plenty of great content coming to PlayStation Vita.
From the first unveil of Assassin's Creed III Liberation (which will also sport a limited-edition PS Vita bundle) to the announcement of PlayStation All Stars: Battle Royale coming to Vita with PS3 cross-play support, from PSone classics support via a system software update (coming this summer) to new streaming partners (Hulu Plus and Crackle), the content lineup for PS Vita is stronger than ever.
In the coming months, you can look forward to new game reveals and other news for Vita; in the meantime, we wanted to let you know that a minor system software update will...
For those curious, Sony has removed PS Vita update v1.65 from PlayStation Network due to a technical fault related to adhoc play in PSP titles.
While there is no official changelog posted yet PlayStation Vita Firmware 1.66 is expected to remedy this issue for users.
Additionally, some users are reporting that if you want to snag older free Minis that you got with your subscription, you're able to delete the non-functioning existing version and replace it with a fresh download.