newbie question on mines & space empires V

[nesrall]

These are multi-player Q's for PBW. I know a treaty greater then NA doesn't set off mines, but the Q I have is can any other treaty level other then partnership see the mines you have layed, & also...if a enemy fleet has a sweeper aboard their fleet & sweeps your minefield...do the enemy ships keep going on their way?....or does the fleet stop where they swept the minefield for the turn?

Also Chips & Bits Online shows a pre-order for Space Empires V...coming out this month...but it's the only place I've seen anything about it at all?...Anybody else hear anything about it?