No I don't think so.
Maybe they have a good relationship with the US, but bear in mind that Poland is joining the EU - so Airbus could be favoured. The F-16 tender was a bit tricky, so it could be Europe's turn now.
Even the 763's are not always fully utilised, so why an even bigger plane? Maybe increasing frequency would be better, by adding additional 762/3s.
And lot is joining Star Alliance, so a lot of traffic could be handled via FRA
or other Star hubs, with LOT flying mainly North American routes.
The 767s are getting old, and since LH
, US Airways, OS
have A330s, isn't that the direction LOT should go?
Even the Kenya Airways 764 order was switched to 763s and 777s right?