We do not update biblatex, because it use biber, by default which is not available in BaKoMa TeX.
When this issue will be resolved we will update biblatex.
Anyway, you can update biblatex manually (rom CTAN) to recent version, and configure it to use bibtex.
BaKoMaTeX 10.50 includes new version of biblatex.
NOTE: Running biber is also supported.
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