The Maryland Broadband Co-op is currently laying the fiber. That will have no impact on FTTH (fiber to the home) as I've heard them explain in political meetings. Their purpose is to build infrastructure which will allow private sector business to lease light or dark strands of fiber at different bandwidth levels so that ISP's and other private ventures can have large-scale Internet connections (read bandwidth) at lower prices.
For example, here on the Eastern Shore it is about $12k per month for a 45meg DS3 connection. I can lease a fiber line from one of their POP locations in say Baltimore where I can have that same DS3 for about $250 per month then hang fiber from my NOC (network operations center) to their POP say in Cambridge.
The theory behind this is by cutting costs to the private sector for bandwidth, small ISP's like us can afford to expand our coverage more and/or cut our prices and become more competitive.
Verizon will not be utilizing this fiber for FiOS and as a matter of fact, Verizon has stopped all plans for new FiOS build outs nationwide. There are even some regions that Verizon has offloaded FiOS to Frontier which as you can imagine, well I'll leave it at that.
Verizon shelves plans for future FiOS rollouts, relocations to Massachusetts set to boom -- Engadget