Although discovery technologies are now populating exoplanet catalogs into the thousands, contemporary astronomy is poorly equipped to find the most compelling exoplanetary real-estate: earth-analog systems within our immediate solar neighbourhood. The TOLIMAN space telescope aims to pioneer low-cost, agile mission concepts dedicated to astrometric detection of exoplanets within a few parsec, particularly targeting Earth's nearest neighbour the Alpha Cen system. It accomplishes this by deploying an innovative optical and signal encoding architecture that targets the most promising technique for these critical stellar targets: high precision astrometric monitoring. With the 12.5 cm science instrument now under contract and advanced plans for the overall mission envelope, this instrument promises to deliver its first scientific outcomes by the middle of the decade.