Samsung has reiterated that it will indeed launch Galaxy Tab 8.9, 10.1 and Galaxy S2 in India this month. All the three devices are yet to be released in any market; India seems to be first of the few markets to get these tablets and Galaxy S successor.
Company is yet to declare a specific launch date. Samsung announced the new Galaxy tablets at CTIA recently, while Galaxy S2 was launched at Mobile World Congress.
Update: Samsung Mobile India has now announced that while tablet launches are on schedule, Galaxy S2 India launch will be postponed due to delay in global launch.