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Moving past the visual similarities of HUD2 and HUD3, under the hood, HUD3 adds probably 50% more features and includes a brand-new version of HUD: HUD Queues
The full list of current HUD3 features can be viewed on our public website: http://pbxtra.fonality.com/products/hud/edition-comparison.html
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HUDlite was a product created to bridge the gap between trixbox CE and Fonality's commerical commercial product line. HUDlite included far more features than HUD2 PE. Most customers on our trixbox platform have experience with HUDlite and consider this product the "previous" version of HUD. When these customers upgrade to HUD3 PE, they notice major differences that are not consistent with an "upgrade".
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