Berriew will be looking to secure their second final spot in the space of five days when they take on fellow MMP Mid Wales League title chasers Caersws in the League Cup semi-final in Montgomery.
Goals from Richard Davies and Joe Haycock gave them a 2-1 midweek win over Radnor Valley to reach the final of the Central Wales Cup, but they will face a Bluebirds side keen to place their hands on silverware after an indifferent second half to the season.
Elsewhere on Saturday, Guilsfield host Prestatyn and Llanrhaeadr go to Porthmadog in the Huws Gray Alliance.
Llanfair United have the chance to bolster their title tilt in the MMP with their three main rivals, including Llanidloes Town, not in league action.
JD Welsh Premier
Newtown v The New Saints
Saturday
Huws Gray Alliance
Guilsfield v Prestatyn
Porthmadog v Llanrhaeadr
Central Wales Cup
MMP Mid Wales League
League Cup, semi-final
Berriew v Caersws (at Montgomery)
Division One
Aberaeron v Llanfair United
Builth Wells v Kerry
Llandrindod v Tywyn Bryncrug
Llansantffraid v Bow Street
Radnor Valley v Carno
Division Two
Aberystwyth University v Abermule
Four Crosses v Presteigne
Hay St Mary's v Machynlleth
JT Hughes Montgomeryshire Amateur League
Division One
Bishops Castle v Forden United
Guilsfield Reserves v Maesyrhandir
Llangedwyn v Trewern
Division Two
Llanrhaeadr Reserves v Churchstoke Reserves
Llanymynech v Llansantffraid Reserves
Trefonen v Welshpool Town Reserves
Waterloo Rovers Reserves v Four Crosses Reserves
Mid Wales Trophies Consolation Cup, round one
Abermule Reserves v Llanwddyn