DBISAM 4.39 is now available for download. If you're an existing customer, then you should be receiving an email shortly with download instructions. You can view the release notes, including any breaking changes, on the download page before downloading.
This release includes support for RAD Studio XE6 (Delphi 32/64-bit and C++Builder 32/64-bit). It also contains bug fixes for several incident reports, which are detailed here.