Microsoft’s upcoming browser ‘Spartan’ and Internet Explorer in Windows 10 will use different engines. Only Spartan will be equipped with the latest render engine, in contrary to Internet Explorer in Windows 10, which will only be able to use its current engine for legacy reasons.
This means that Internet Explorer for Windows 10 will not be able to utilize two render engines as previously thought. Microsoft has decided to only equip Spartan with its latest render engine due to user feedback. Users would prefer to experience Internet Explorer and Spartan as two separate products, according to the company.