This was posted by Ryan2000 earlier in another thread, which I assume was removed for breaching the rules.
The Aer Lingus website is now showing extra frquencies on some existing routes from the end of June next year
The changes seem to be
Alicante 2->4 per week
Amsterdam 9->11 per week
Malaga 4->6 per week
Nice 2->3 per week
Rome 2->4 per week
Warsaw 3->4 per week
Assuming an extra aircraft, that seems to leave 4 rotations a week available for new routes.
My bets would be on 2x weekly to Riga and either 2x weekly to Krakow or 2x weekly to Madrid.