That is correct. But the investment into your property would need to be USD 500,000 minimum.
This gets you an your family residency and all the benefits of tax relief and all, but I don't know how that stuff works.
Its also the reason why so many people are investing into IRS projects in Mauritius. These houses are very luxurious and are designed to cost UD$ 500,000 and above.
If you have that much to invest, I can let you know what projects are available and the costs too.
Some go upto $2m and there are even more expensive ones coming up that will really break the bank.
Let me know if you want more info on these
http://www.islandinfo.mu