Eve more, there is no warranty that the customer will actually get the bug fixes. Embarcadero clearly states that: "All fixes, updates and hotfixes are purely at Embarcadero's discretion."
Actually it states that twice. So, don't miss to read it :)
Ongoing Maintenance and Hot-Fixes for Previous Versions*In the middle of a development cycle on an older IDE version? The RAD Studio team will now continue to release critical updates and hotfixes for up to two (2) years and three (3) major versions, improving your investment and enabling you to upgrade to the latest version on your schedule. All maintenance updates and hotfixes will only be available to users on an active Subscription and cannot be downloaded or purchased separately. Versions currently under Ongoing maintenance include XE7, XE6, and XE5 versions. Active subscribers will also have immediate access to beta hotfixes, providing the most timely access to critical fixes. All fixes, updates and hotfixes are purely at Embarcadero's discretion.
Some stores are already selling upgrade subscriptions for 2000 pounds + VAT.
There is another way to get updates?
No. The FAQ clearly states it:
Can I obtain updates and hotfixes without a subscription?
An active update subscription is the only way to obtain updates and hotfixes for current and prior (up to 2 years) releases.
I see a big incoming wave of programming towards Lazarus.