Evaluate TLB questions

1) I want to evaluate TLB with the latest build (be it beta), is the demo version 3.2.6 on the download site the latest?

Yes this is the latest version.

2) Beside the limitation set by some plugin, what are the limitation to main program (the DEMO)?

There are no any function limitation. In demo mode TLB show 60px picture at left side of toolbar and sometmes nag screen on shortcut run.

3) Is there any known bugs which only appear in a DEMO but not in the licensed copy of TLB?

I do not know about such bugs.

4) I currently use Stardock's ObjectBar and I have few other Stardock products like DesktopX, IconPackager and Enhanced Dialog installed. Is there any known conflict between TLB and any of the above Stardock applications?
(If there is one, I prefer to uninstall it before trying TLB)

I do not know about conflicts with Stardock's pruducts. The only thing that can have conflicts is WindowBlinds, but only with some very old or pure designed skins.

5) What is the formal upgrade policy of this program?
I read from the official site, it says something like "... Not at this time...", give me a sense of upgrade are free now but sometime in the future, user will 've to pay for upgrade.

We don't plan to make paid updates.

Btw, I am impressed by the product and the support given by this forum.

Thank you and welcome to our forum.