Tenant lease is up in 4 months, do I let them know I'm selling?

[Ian Lord]

I am not renewing my tenants 2 year lease, which is up June 30th, and looking to sell the house. The house will need new carpet and interior paint. The tenants have taken decent care of the place, but have been consistently flaky with paying on time and have used their "get out jail free card" to avoid getting evicted for that issue. 

Is it worth letting the tenants know the property is being sold? I'm thinking it will be helpful to get carpet measurements taken in advance of their move out. Is it worth giving the tenants some sort of concession to move out early so I can get the house listed earlier?