In a surprise announcement, CapitaLand Limited (SGX: C31) unveiled a major demerger involving its development and investment divisions. The real estate giant plans to go asset-light and is proposing a transaction to spin off its investment management arm while privatising its development arm. This announcement marks the third restructuring by a Temasek-related entity. Back in June last year, utilities giant Sembcorp Industries Limited (SGX: U96) announced a recapitalisation exercise cum demerger of its offshore and marine subsidiary Sembcorp Marine Limited (SGX: S51). Following that, in early February this year, Keppel Corporation Limited (SGX: BN4) then announced a restructuring of its offshore and marine division, splitting it into three parts. Going asset-light seems to be a common theme here as all three companies are shedding their asset-heavy and debt-laden units in favour of a corporate structure that allows flexibility and nimbleness. Here are five things investors need to know about this transaction....