Moving to LR5

[jacksage]

I currently have Lightroom 4 and am thinking about getting LR5. But are there any big changes/ improvements?

Is it worth the switch?

 

[KmH]

The changes made to the Healing Brush alone are worth the upgrade.
Download Photoshop Lightroom 5 photo software | Adobe Photoshop Lightroom 5
Digital image processing software | Adobe Photoshop Lightroom 5 - Features

Plus by getting LR 5 as part of CC you get updates as soon as they are available, instead of having to wait for the next version.
If you have a registered copy of CS 3, 4, 5, or 6, for a limited time you can subscribe to Photoshop CC and LR for just $10 a month.
https://creative.adobe.com/plans/offer/photoshop+lightroom