This weekend TheSixthAxis.com (linked above) reports that Red Dead Redemption (released on May 18 in North America and May 21 in Europe) requires updating your PlayStation 3 entertainment system to PS3 Firmware 3.21 or higher, which also removes the OtherOS functionality along with the ability to use the PS3 Exploit and likely PS3 Custom Firmware.
However, according to several Forum members (including blood911, Chivafighter and IanJ) it may actually require up to PS3 Firmware 3.30 depending on your region.
Additionally, IanJ also reports that ModNation Racers requires PS3 Firmware 3.21 to play it on Sony's PlayStation 3.
To quote from TSA: "Rockstar's Red Dead Redemption not only requires that particular system software to run, but handily includes it on the disk for easy installation, too.
Chances are there have been other games out since April 1st that required the OtherOS removing firmware update, but Redemption is likely to be one of the higher profile titles to do, and as far as we know this isn't stated on the box at all so consider this a notice if you're still to pick up the game."
The decision is now left to the end users: Update your PS3 console to the latest Firmware to play new titles and game online, or hold out for GeoHot to release his PS3 Custom Firmware with hopes that more PS3 hacks are discovered and new PS3 exploits surface to further unlock the PlayStation 3.
Of course, for those who can afford it, there is another option... simply buy a second PS3 and update it to the latest PlayStation 3 Firmware version while keeping your pre-3.21 FW machine with OtherOS in the closet until it can be put to good use.
More PlayStation 3 News...