BTC miners should expect their revenue fall or divided by two after Halving, meaning next month after the networks block subsidy is cut into BTC mining would not be lucrative as it was.
The halving will see to BTCs block reward fall from it initial 12.5 BTC to 6.25 BTC.

Estimation currently shows that the BTC halving is bound to take place anywhere
Between May 12 and 13, 2020 but the date could change depending on the production of blocks from now on.
And as The Block's Larry Cermak noted in a column published Monday, miners currently make about $13.4 million a day in terms of revenue (profits depend on the cost of electricity, labor and other expenses).

But Revenue generation is sure say to change should current prices remain the same after the halving. Thus miners revenue generation will be around $ 6.5 million and $6.7 million daily.
Is There Going To Be Implications? Yes and they are going to be significant for miners in terms of finance.
Miners running inefficient or less capable hardware will be in great pressure especially those affected by recent market gyrations.

But on the brighter side, miners with great and better hardwares will stand to gain despite the halving next month. Competitively, they will be the gainers as miners with inefficient hardwares will fade out of the system should they not be able to acquire new and better ones.
BTC halving is sure to affect the newbies who would want to engage in BTC mining as it won't be profitable for them.
If you would like to make some mining profit before the halving, then you are welcome to download this efficient browser - The Cryptotab Browser