Firmware 1.58 is available now in some Buffalo official website (i.e. Asian and US site).
The release notes only indicate fixing on Media Server update issue and no further information about Twonky.
Can anybody confirm if the new firmware is included the update for Twonky?
[Firmware Release Note]* Ver.1.58 [2012.4.19] - Fixed an issue appearing "Media Server update can not be updated completely" warning and error message when configration Media Server.* Ver.1.57 [2012.3.22] - Fixed an issue the header of email notification includes bad timestamp. - Fixed an issue formatting of newly added disk fails. - Fixed an issue the firmware installation fails on the enclosure model.