1. In addition, the only previous version from which you can upgrade is Windows 7.

2. It shut down for maintenance and upgrade work in February 2013.

3. You can upgrade for an additional $500.

4. It's a major upgrade over the Siri users found in iOS 8.

5. Its call centre will also see an AU$3.5 million upgrade for 2013-14.

6. Despite the upgrade, the ferry will still make the crossing at an average speed of 2kmh 1.24mph.

7. Remember the upgrade to iOS 7?

8. Analysts figured that the upgrade cycle would occur in 2012, then switched their forecasts to 2013.

9. The upgrade boosted its performance from 9.8 petaflops to 19.6.

10. After that customers will have to pay at least $120 to upgrade their PCs to Windows 10.

11. Windows 10 is available as a free upgrade for users of Windows 7 and 8.

12. The operating system is available as a free upgrade for Windows 7 and Windows 8 users until July 29.

13. Windows 7 and Windows 8 users get a free upgrade to Windows 10.

14. Owners of 2016 vehicles with Sync 3 will be able to upgrade to the expanded system later in 2016.

15. OpenSSL 1.0.2 users should upgrade to 1.0.2h, while OpenSSL 1.0.1 users should upgrade to 1.0.1t.