There's only two parties - Lib Dems & Greens - which promised a chance to revert Brexit, so I wouldn't expect it to be reversed. A softer Brexit is certainly on the cards though.
This guide [0] from the BBC might help to understand how coalitions are formed. It's currently looking very tricky as the splits are crazy [1].
[0] http://www.bbc.co.uk/news/election-2017-40209087
[1] https://www.theguardian.com/politics/ng-interactive/2017/jun...