This does not apply to M3 Simply since M3 Simply can use Wood R4.
This only applies to M3 Real/M3i0
It's been over a year now since they have updated and it truly appears that they are officially dead. It maybe true that they did release a few core updates here and there to keep up with DSi and 3DS updates, but they never did release any updates to Sakura nor Touchpod to follow those core updates. Sadly the only update they did release was an update to Sakura to fix something they broke, but even then it had no real game fixes. So even with that update it was grossly out-of-date. Then to add insult to injury, they released infamous M3i Zero gmp z003, which locked out 3rd party kernels. The card was released with broken features, barely worked with their own software, and pretty much ruined any hope for their card's future. This card was the last nail in the coffin.
Now there are some small updates coming from Retrogamefan's hard work, but this is only beneficial to people who own M3 Reals and older M3i Zero's, which people can't buy anymore. This means there is no benefits to buying a new card since you can't use these updates. Not saying his work isn't worth it, but it's not worth buying a new card that won't even work with them.
It pains me to say all this since my first flashcard was an M3 Real and at it's prime, it was the best card around. It used to have a great mix of style and functionality. In fact I still love the look and feel of M3 Sakura, it was an all in one that had some much to offer back in the day. I really wish it never came to this point and in fact wish that the M3 Team would come out with something that would blow the world away, but sadly that's just a hopeful dream. At this point I hate to say it, but even the R4 and an R4 clone, are leaps and bounds a head of the M3.
With all that said, I really suggest people invest into one of these cards; R4i Gold (from r4ids.cn/),Supercard DSTwo, Acekard 2i, and R4 . All have regular updates, even if it's not from an official team, it's still better than no updates as well offer loads of features like wifi-updates and in the DSTwo's case features like GBA emulator.