Yes, thats the good news for about million Facebook users from Bangladesh. Facebook is now officially unblocked in Bangladesh from today(2010-06-05) 10PM. It was Blocked on 30th May, 2010.
Facebook was blocked from bangladesh since 30th May, 2010 due to distribution of anti-social content.
BDNews24.com Reported that
Mango Telecom Services managing director, Mir Masud Kabir told bdnews24.com that he received a phone call from chairman of the telecoms regulator retired Major General Zia Ahmed, asking him to withdraw the restrictions on the networking site. Head of the international internet gateway said, “I received the instruction at 11:37pm and reopened the site a minute later.”
Though BDNews24.com reported it reopened from 11:38PM but we have seen it was accessable starting from 10:01PM via both Mango and BTCL.
Two days ago Govt. Official said they will be lifting the blockage as Facebook authority has responded and cleaning their site and removing that so called anti-social content.
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After a week's block, the social networking website Facebook is finally back in Bangladesh.  Facebook was blocked by local authorities in Bangladesh after some "offensive" content of local politicians were uploaded and one man was arrested. 

The block was lifted 23:58 local time (17:58 ). According to ''BDNews24.com'', Mir Masud Kabir, the Mango Telecom Services managing director, had received a phone call from  at 11:57 p.m. (17:57 UTC), asking him to lift the Facebook block. Kabir unblocked Facebook a minute later.

The authorities had decided to unblock Facebook after the company promised to remove the content considered blasphemous as well as the "obnoxious" pictures of the country's leaders.