Upgrade to Acronis True Image 2015 from a much older version (TI 2009)

Hi there,

Pardon me if this is not the right forum for this post.... I am new here.

We have been using Acronis for many years now. As a matter of fact, we still have 6 un-opened copies of Acronis True Image Home 2009 (with Free Upgrade to TI 2010).

As we are now consider acquiring the True Image 2015 again, we were wondering if our earlier version are eligible for upgrade pricing?

Please advise....

Thank you and regards,
Jeffrey