The restoration was finished ages ago - in fact, I saw it at the Gdynia Film Festival back in 2016, along with the other two.
What's holding things up on both sides of the Atlantic (since Second Run is just as keen to acquire these films for the UK) is the same thing affecting international distribution of Polish titles across the board: for some reason Polish rightsholders have started asking for truly ridiculous licensing fees that clearly aren't commercially viable by any stretch of the imagination.
Hopefully sanity will prevail at some point, at least when the penny drops that the alternative is getting no money at all - but... well, you have only to look at Second Run's previous enthusiasm for Polish cinema versus the number of Polish titles that they've put out on Blu-ray, which currently amounts to a big round zero against two from Slovakia, three from Hungary and four from the Czech Republic. Believe me, this isn't down to lack of interest on their part.