Anshul,
MyEclipse Pro and MyEclipse Spring does not have advanced support for Websphere applications. That is the reason you are not seeing support for latest versions of Websphere in them.
If you are looking to adopt Spring technologies in your WebSphere-deployed applications then you should work with MyEclipse Bling.There is no way to add WAS 7 support to MyEclipse Spring.
Let us know if you have any questions.