The following are new investments that those saving and or living in retirement might consider for their portfolios. We've included commentary from advisers about the investments, as well.

Invesco has launched a new suite of factor ETFs:

Invesco Corporate Income Defensive ETF IHYD

Invesco Corporate Income Value ETF IHYV

Invesco Emerging Markets Debt Defensive ETF IEMD

Invesco Emerging Markets Debt Value ETF IEMV

Invesco Investment Grade Defensive ETF IIGD

Invesco Investment Grade Value ETF IIGV

Invesco Multi-Factor Core Fixed Income ETF IMFC

Invesco Multi-Factor Core Plus Fixed Income ETF IMFP

First Trust has launched The First Trust Lunt US Factor Rotation ETF, which is designed to replicate the performance of the Lunt Capital Large Cap Factor Rotation Index.

What say advisers about these funds?

"The jury is still out on the relative efficacy of smart beta indexing approaches," says Christopher Hopkins, a vice president with Barnett & Co. Inc. "But more fundamentally, in my mind, there is an overabundance of available indices in existence that is overwhelming investors."

According to the Index Industry Association, there are more stock market indices globally than there are stocks, by a factor of 70. That is, says Hopkins, about three million different index offerings. "A similar proliferation of benchmarks is occurring in the fixed-income market, so each new entrant risks getting lost in the noise after the initial attention during its launch, and we question the value of these new entrants relative to their added cost."

Hopkins' approach: "We would favor sticking to fundamental, broad-based sector indices with low cost and broad liquidity."

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