THE review of urban renewal, with emphasis on the role of the Land Development Corporation (LDC), will be completed by the middle of this year, said the Secretary for Planning, Environment and Lands, Mr Tony Eason. He told legislators the review took longer to complete than envisaged because the subject was complex. He said any policy changes in relation to the LDC, urban renewal or redevelopment which might emerge from the review would be released to the public. The lessons to be drawn from the review would largely be relevant to private developers. The secretary said no timetable had been set for the review on private developers. He said that from 1988 to 1992, 69 hectares of land were produced by land exchanges and lease modifications, which were, in effect, redevelopment cases. About 50,000 flats were produced by demolishing just over 8,000 flats and redeveloping the sites. During the same period, 28 hectares of land was disposed of by the Government through its land disposal programmes. ''In considering the arrangements of urban renewal, we should not lose sight of the fact these [redevelopment] processes are extremely important in maintaining the supply of new accommodation for our community,'' Mr Eason said.