TheA New Service A New Service

A language exchange web service called Lang-8 which I had used before, will endbe shutting down on the last day of February. A language exchange web service called Lang-8 which I had used before, will be shutting down on the last day of February.

"will end the last day of February", is incorrect, instead " will be shutting down on the last day of February", is correct

A language exchange web service called Lang-8, which I had used before, will end on the last day of February. A language exchange web service called Lang-8, which I used before, will end on the last day of February.

A language exchange web service called Lang-8 which I had used before, will end the last day of February. A language exchange web service called Lang-8 which I had used before will end the last day of February.

A user created a new similar service andthrough which we can transfer our past posts to there. A user created a new similar service through which we can transfer our past posts to there.

A user created a new, similar service and we can transfer our past posts (to) there. A user created a new, similar service and we can transfer our past posts (to) there.

The new service doidn’t officially release yet, so I don’t know how is itt will be. The new service didn’t officially release yet, so I don’t know how it will be.

I added "how it will be", as we are talking about an event in the future, so we have to use future instead of present tense.

The new service dohasn’t officially released yet, so I don’t know how is it. The new service hasn’t officially released yet, so I don’t know how is it.

The new service don’hasn't officially released yet, so I don’t know how is itwhat it's like (yet). The new service hasn't officially released yet, so I don’t know what it's like (yet).