V1.02 is now available for download at the Japanese Ricoh site:
http://www.ricoh-imaging.co.jp/japan/support/download/digital/ks2_s.html
(in Japanese)
Announced changes:
1. Stability of CDAF is improved.
2. Finer sound quality setting when external microphone is connected.
3. DNG RAW may not be displayed correctly at the PC when previewed with software, bug removed.