@HarshaG95   please see the My Pega FAQ which states why only the latest version is provided.

The latest Pega Platform™ Personal Edition is available to all clients and partners. If you are registered on Pega Community with a service provider e-mail domain (e.g. @gmail.com, @yahoo.com, etc.), you will not have access to Personal Edition, or licensed software. Please update your account to use your company email address. For help with account-related inquiries, please contact [email protected].

(Currently it is possible to obtain Personal Edition 8.7 from the My Software page, but that is only due to a temporary 8.8 issue with the builds process).  

Please use the 'Contact Us' form listed on the Trials FAQ to discuss your Trials version further with the Trials team.

Hi @HarshaG95 

You mean Pega Cloud for Free Trail ? or PEGA Personal Edition ?

Community Edition (Pega Cloud for 30 days free trail) https://www.pega.com/platform-trial 

Pega Community Edition in Cloud we have 8.8 Only, I am not sure on this. Don't have 8.7 in Pega Community Edition Cloud

If you want PEGA software Download from My Software ( https://my.pega.com/mypegaprd/PRAuth/SSO/MyPega/MySoftware ) through your PDN Account, it will only download the 8.7 Version.

https://my.pega.com/mypegaprd/PRAuth/SSO/MyPega/MySoftware 

If you want 8.8 Version We have wait for few more weeks

Here you can find the Previous post about 8.8 Version.

https://support.pega.com/question/when-will-pega-platform-88-be-released

I hope this will help you

Thanks

Ashok