Graphic Change Due to DPI Scaling for Holloween Update GW2

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They made some changes to GW2 graphics settings according to today's patch notes:

64-bit clients: Added support for DPI-aware UI scaling. There is now an option in graphics settings to enable/disable it.
Updated cursor art to support DPI-aware UI scaling.

When I logged it the UI was way to large. To fix this if it happens to you go to
Game Menu (upper left most icon)
Graphics Options (2nd tab on left)
Interface Size

If you need to fix the text size in the Chat Box
Chat Options (the cog Icon to the left of the chat tabs)
Text Size

That seemed to fix things for me. Hope that helps!