exploratory -
serving in or intended for exploration or discovery; "an exploratory operation"; "exploratory reconnaissance"; "digging an exploratory well in the Gulf of Mexico"; "exploratory talks between diplomats"
alpha early testing stage of a software or hardware product; "alpha version"
beta preliminary or testing stage of a software or hardware product; "a beta version"; "beta software"
preliminary denoting an action or event preceding or in preparation for something more important; designed to orient or acquaint with a situation before proceeding; "a preliminary investigation"