You may have read about a huge number of strike days being announced at Heathrow. Well the first one has been cancelled following a pay offer (and it sounds like a generous one) and staff will be balloted. If they accept (which the union is advising them to) then all the airport strikes will be off.
As noted previously, the main impact of these has been cancellations rather than on the ground, but it's still good news for travellers.