WP8 is so close, I promise you and your mom won't regret waiting these few months.
Skype won't get any updates on WP7. And some developers are already working on WP8-only apps.
If you buy a WP8 it will probably get updates and most important many new apps and features for a couple of years, while the Lumia 900 and WP7 will be more or less "dead" before you have passed even 18 of 36 months on the contract.
36 months ago there was not even a WP7 released, so yes, buying a WP7 device now and think it would last 36 months is a huge mistake.
Skype won't get any updates on WP7. And some developers are already working on WP8-only apps.
If you buy a WP8 it will probably get updates and most important many new apps and features for a couple of years, while the Lumia 900 and WP7 will be more or less "dead" before you have passed even 18 of 36 months on the contract.
36 months ago there was not even a WP7 released, so yes, buying a WP7 device now and think it would last 36 months is a huge mistake.
