Obviously no one can say for sure, but I am sure an un-notable language could possibly gain even more popularity with a Wikipedia entry as it helps people learn more about a small obscure language that might grow in to something bigger - even if it takes years to do so.
While it might be argued that a page with little to no information should be deleted, I don't think that pages with adequate information to get someone the general idea about some new (possibly just new to the reader) programming language should go anywhere. It's a valuable resource and losing that kind of information from Wikipedia is a shame.
Please keep that line of thought in your AfD's - and think about the "notability" that Frenetic may get in the future.